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Seam-Based Edge Blending for Multi-Projection Systems
Marius Pedersen,Daniel Suazo,Jean-Baptiste Thomas 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.4
Perceptual seamlessness of large-scale tiled displays is still a challenge. One way to avoid Bezel effects from contiguous displays is to blend superimposed parts of the image over the edges. This work proposes a new approach for edge blending. It is based on intensity edge blending adapted on the seam description of the image content. The main advantage of this method is to reduce visual artifacts thanks to context adaptation and smooth transitions. We evaluate the quality of the method with a perceptual experiment where it is compared with state-of-the-art methods. The new method shows most improvement in low frequency areas compared to the other techniques. This method can be inserted into any multi-projector system that already applies edge blending.
Thickness Eff ect in Fatigue of Welded Butt Joints: A Review of Experimental Works
M. M. Pedersen 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.6
A review is conducted on the fatigue strength of thick butt joints in steel. The causes of the thickness eff ect are discussed with emphasis on the peculiarities of axially loaded butt joints. The available experimental investigations in the open literature are reviewed and discussed. Two specifi c investigations are highlighted, in which testing was conducted under particularly representative conditions, which both show limited/non-existing thickness dependency. It is concluded that the reduction of fatigue strength in current codes seem too conservative for the case of axially loaded butt joints.
Hege Lynum Pedersen,Rafi Ahmad,Ellen Kristin Riise,Hanna-Kirsti Schrøder Leiros,Stefan Hauglid,Sigrun Espelid,Bjørn Olav Brandsdal,Ingar Leiros,Nils-Peder Willassen,Peik Haugen 한국미생물학회 2010 The journal of microbiology Vol.48 No.2
The Ferric uptake regulator (Fur) is a global transcription factor that affects expression of bacterial genes in an iron-dependent fashion. Although the Fur protein and its iron-responsive regulon are well studied, there are still important questions that remain to be answered. For example, the consensus Fur binding site also known as the “Fur box” is under debate, and it is still unclear which Fur residues directly interact with the DNA. Our long-term goal is to dissect the biological roles of Fur in the development of the disease cold-water vibriosis, which is caused by the psychrophilic bacteria Aliivibrio salmonicida (also known as Vibrio salmonicida). Here, we have used experimental and computational methods to characterise the Fur protein from A. salmonicida (AS-Fur). Electrophoretic mobility shift assays show that AS-Fur binds to the recently proposed vibrio Fur box consensus in addition to nine promoter regions that contain Fur boxes. Binding appears to be dependent on the number of Fur boxes, and the predicted “strength” of Fur boxes. Finally,structure modeling and molecular dynamics simulations provide new insights into potential AS-Fur–DNA interactions.